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在硫酸铵存在下,乙醇水溶液能够分为醇/水两相,在分相过程中,Pd~(2+)与KBr和C_2H_5OH_2~+生成的[PdBr_4~(2-)][C2HsOH-2~+]_2三元缔合物能被乙醇相萃取,使Pd~(2+)与Ru~(2+)、Ag~+、Cu~(2+)和Pb~(2+)完全分离。该法在微量钯的分离和富集分析中有一定的实用价值。
In the presence of ammonium sulfate, the aqueous ethanol solution can be divided into alcohol / water two phases. During the phase separation, Pd ~ (2+) and [PdBr_4 ~ (2 -)] [C2HsOH-2 ~ +] _2 ternary complexes can be extracted by ethanol, which completely separated Pd 2+ from Ru 2+, Ag 2+, Cu 2+ and Pb 2+. This method has certain practical value in the separation and enrichment analysis of trace palladium.